I used to be able to do it, and I'm pretty sure I could still do it, just not in a normal doorway. they key is finding something wide enough for you to brace both legs against the sides, but not so wide that it's impossible to keep them there.

I actually did a version of that when I used to work out with a trainer. He said it was a good way to stretch your inner thighs before working out. The gym had two poles that were appropriately close enough together.

Well, after seeing the picture of Chris, my friend and I both tried doing that on one of the the doors at the local ERC. And, both of us failed miserably at it and fell, but, we provided a lot of mirth for all who saw us trying the stunt. However, I think I could do it and hold that position, once I can get my leg muscles stronger. Hey it another reason to get stronger and fit, eh?